2 step activation.

littlemanjoe · 04-24-2022, 07:43 PM

Which one seems to work better to activate the 2 step, a button on the pedal, or a pressure switch?
First time out with the new car. I noticed a little hesitation right on the launch, almost like the 2 step was still activated. I currently have a button in the pedal. When I'm releasing the pedal in the garage I notice the button bounces.

e vassar · 04-24-2022, 09:49 PM

We have the pressure switch. Leaves very clean

garyc · 04-25-2022, 08:51 AM

hi have mine on my brake light switch, a lot of travel very inconsistent, what are you using for a pressure switch?

Doug Hoven · 04-25-2022, 10:07 AM

I tried the brake light switch setup with the nova. Was a little Leary of the 2 step being activated every time I hit the brakes. Here’s the link to the pressure switch I plumbed in. I know of a handful of racers that use it and have had good results. So far so good with me too. Be sure to get the specific wiring harness when ordering. https://www.automationdirect.com/adc...xoCwCEQAvD_BwE

garyc · 04-25-2022, 10:22 AM

is the one wire switch on most oem (mopar) proprietary valves just a ground to turn dash light on??

Tom Goldman · 04-25-2022, 10:56 AM

I've used United Electric Controls pressure switch model 10-B12 on quite a few cars ,
Very easy to adjust . shop them online ,not inexpensive ,usually cost around $160, but well worth it .

HR3128 · 04-25-2022, 09:02 PM

Assuming you are using the 2-step for launch control, I think the 12V signal to activate the 2-step should come form the Line-Lock solenoid or the trans-brake solenoid.

If you want it activate from the brake pedal, I would use a 12mm cylindrical proximity switch to drive a relay and use the relay contact to activate the 2-step. Prox switch is easy to fab up a mounting bracket & adjust. Trip point is very repeatable.

littlemanjoe · 04-26-2022, 08:34 AM

Thank you everyone for the help!

Alan Nyhus · 04-26-2022, 04:10 PM

The adjustable ones from Tansducers Direct work great. -Al

Pete Lanciers · 04-27-2022, 11:47 AM

Brother, you want to use a pressure switch go the additional mile to ensure the switch only sees ground in first gear. Also a big proponent of wiring different colored indicator LEDs to confirm switch has power (you didn’t stage in 2nd, not that any of us have ever done that, lol) and the second to indicate pressure switch has activated the two step. I am a fan of the IFM ELECTRONIC PK6522 PRESSURE MONITOR but there are other viable solutions.

04-24-2022, 07:43 PM	#1
littlemanjoe Member Join Date: Feb 2018 Location: West Layfayette Posts: 105 Likes: 159 Liked 40 Times in 18 Posts	2 step activation. Which one seems to work better to activate the 2 step, a button on the pedal, or a pressure switch? First time out with the new car. I noticed a little hesitation right on the launch, almost like the 2 step was still activated. I currently have a button in the pedal. When I'm releasing the pedal in the garage I notice the button bounces.

04-24-2022, 09:49 PM	#2
e vassar Member Join Date: Jul 2015 Posts: 354 Likes: 62 Liked 238 Times in 93 Posts	Re: 2 step activation. We have the pressure switch. Leaves very clean

04-25-2022, 08:51 AM	#3
garyc Member Join Date: Mar 2021 Posts: 124 Likes: 0 Liked 51 Times in 30 Posts	Re: 2 step activation. hi have mine on my brake light switch, a lot of travel very inconsistent, what are you using for a pressure switch?

04-25-2022, 10:07 AM	#4
Doug Hoven Member Join Date: Feb 2018 Location: Jersey Posts: 181 Likes: 171 Liked 752 Times in 146 Posts	Re: 2 step activation. I tried the brake light switch setup with the nova. Was a little Leary of the 2 step being activated every time I hit the brakes. Here’s the link to the pressure switch I plumbed in. I know of a handful of racers that use it and have had good results. So far so good with me too. Be sure to get the specific wiring harness when ordering. https://www.automationdirect.com/adc...xoCwCEQAvD_BwE __________________ 1189 F/SA Defunzalo Racing Enterprises

04-25-2022, 10:22 AM	#5
garyc Member Join Date: Mar 2021 Posts: 124 Likes: 0 Liked 51 Times in 30 Posts	Re: 2 step activation. is the one wire switch on most oem (mopar) proprietary valves just a ground to turn dash light on??

04-25-2022, 10:56 AM	#6
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,436 Likes: 776 Liked 700 Times in 204 Posts	Re: 2 step activation. I've used United Electric Controls pressure switch model 10-B12 on quite a few cars , Very easy to adjust . shop them online ,not inexpensive ,usually cost around $160, but well worth it . __________________ Tom Goldman 1500 SG , 1506 STK

04-25-2022, 09:02 PM	#7
HR3128 Junior Member Join Date: Jan 2021 Location: SE Michigan Posts: 23 Likes: 0 Liked 54 Times in 8 Posts	Re: 2 step activation. Assuming you are using the 2-step for launch control, I think the 12V signal to activate the 2-step should come form the Line-Lock solenoid or the trans-brake solenoid. If you want it activate from the brake pedal, I would use a 12mm cylindrical proximity switch to drive a relay and use the relay contact to activate the 2-step. Prox switch is easy to fab up a mounting bracket & adjust. Trip point is very repeatable.

04-26-2022, 08:34 AM	#8
littlemanjoe Member Join Date: Feb 2018 Location: West Layfayette Posts: 105 Likes: 159 Liked 40 Times in 18 Posts	Re: 2 step activation. Thank you everyone for the help!

04-26-2022, 04:10 PM	#9
Alan Nyhus VIP Member Join Date: Dec 2002 Location: Lower Dakota territory Posts: 1,166 Likes: 1,018 Liked 762 Times in 226 Posts	Re: 2 step activation. The adjustable ones from Tansducers Direct work great. -Al __________________ "That'll never work....."

04-27-2022, 11:47 AM	#10
Pete Lanciers Member Join Date: Mar 2009 Location: San Diego Posts: 370 Likes: 809 Liked 563 Times in 146 Posts	Re: 2 step activation. Brother, you want to use a pressure switch go the additional mile to ensure the switch only sees ground in first gear. Also a big proponent of wiring different colored indicator LEDs to confirm switch has power (you didn’t stage in 2nd, not that any of us have ever done that, lol) and the second to indicate pressure switch has activated the two step. I am a fan of the IFM ELECTRONIC PK6522 PRESSURE MONITOR but there are other viable solutions. __________________ Pete Lanciers PAL Automotive Racing Stock 7801